{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x139595faa3bf78384c5370935c67509afc7d36fa2c89d088d39eb4fbd08e6751",
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    "signer": "0x083626C5983025BFec0Ca7BC8FC5B244f8e29b75",
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  }
}